Spring-helix.



No. 841,227. PATENTBD JAN. 15, 1907.

W. H. GHELLIS. SPRING HELIX.

\ APPLICATION FILED APR-5. 1906.

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. K 1 A TTORNEYS n-m NORRIS Ps'rsns 00., WASH1 NGTON, nc.

[/VVENTOR.

1 UNITED STATES PATENT OFFICE.

SPRING-HELIX- Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed pril 5, 1906- Serial No. 310,103-

To all whom it may concern.-

Be it known that I, WILLIAM H. CHELLIs, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented a new and useful Spring-Helix, of which thefollowing is a specification.

This invention relates to helical springs, and has for its objecttoprovide for strengthening the terminals thereof so as to prevent thestraightening out and breaking of the terminal whirls of the spring.

While the present invention is capable of general use, it isparticularly designed for use in connection with muscle-exercisingdevices.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particu larlypointed outin the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure 1 is an elevation of a muscle-exerciser equippedwith springs of the present invention. Fig. 2 is a perspective view ofone terminal of the spring. Fig. 3 is an enlarged sectional view takenlongitudinally through one end of the spring. Fig. 4 is a detailperspective view of the cross-bar employed in Figs. 1, 2, and 3. Fig. 5is a view similar to Fig. 3, showing another embodiment of theinvention. Fig. 6 is a detail perspective view of the cross-bar employedin Fig. 5. Fig. 7 is a sectional view on the line 7 7 of Fig. 5.

Like characters of reference designate corresponding parts in all of thefigures of the drawings.

The helical spring 1 is of the conventional type now commonly used formuscle-exercisers and terminates at each end in a loop 2, setdiametrically across the end of the spring and formed by twisting theadjacent terminal of the spring into a plurality of substantiallycircular loops or whirls, which fit down into the adjacent end of thehelix, so as to bear against opposite sides thereof.

As embodied in Fig. 5 of the drawings, a cross-bar 3 is inserted throughthe terminal attaching-loop 2 and between the two outermost whirls ofthe spring, to which the bar is rigidly connected in some suitablemanner and is rigidly connected to diametrically- 0E- posite sides ofthe outermost whirl of spring said whirl is rendered rigid, and as; thebar passes through and engages the inner side of the terminalattaching-loop 2 the strain on the terminal loop comes upon thecross-bar, whereby the extremity of the spring is prevented fromstraightening out under the influence of strains upon the spring whenthe device is in use.

Another embodiment of cross-bar has been shown in Figs. 2, 3, and 4 ofthe drawin'gs, said bar being in the nature of a flat metallic plate 5similar to the plate 3 but instead of being soldered or otherwisepermanently connected to the spring it is provided at each end with alaterally-projected wing or ear 6, cleft from the cross-bar and designedto bear against the inner side'of the outermost whirl of the spring, thefingers or projections 7 at opposite sides of the wing being introducedbetween the two outermost whirls of the spring, whereby the cross-bar isheld in place and the outermost whirl of the spring is rendered rigid.This cross-bar of course passes through the terminal loop 2 and engagesits inner side in precisely the same manner as hereinbefore describedfor the form shown in Figs. 5 and 6.

As an illustration of one use of the present form of spring the same hasbeen illustrated as a muscle-exerciser in Fig. 1 of the drawings,wherein two springs are employed, each spring being provided at one endwith a bailshaped handle 7, having an eye 8 engaged with the adjacentterminal loop 2 of the spring, the opposite terminal attaching-loop ofthe spring being engaged with a terminal hook 9 of a suitable cross-head10, which is provided with a hanger 11 for engagement with a hook orother support, from which the device is suspended. This exerciser isused by grasping the handles and manipulating the same in the manner ofordinary chestweight apparatus. It will now be understood that thestrain of each handle is taken by the adjacent cross-bar, which isrigidly as shown in Fig. 1 of the drawings is only one of many, as Icontemplate having handles at opposite ends of the spring, so as to usethe device as a portable exerciser.

Having thus described the invention, what is claimed is 1. Aspring-helix having one end terminating in an attaching-loop setdiametrically across the helix, and a 'cross-bar passing through theloop and between adjacent whirls of the s ring.

2. A springelix terminating at one end in an attaching-loop disposeddiametrically across the helix and a cross-bar passing through the loopin engagement with the inner periphery thereof and engaged with one ofthe whirls of the spring.

3. A spring-helix terminating at one end in an attaching-loop disposeddiametrically across the end of the helix, and a cross-bar passingthrough the loop in engagement with the inner periphery thereof with itsends received between adjacent whirls of the spring and connected to oneof them.

4. A spring-helix terminating at one end in an attaching-loop dis oseddiametrically across the end of the he ix, and a cross-bar passingthrough the loop in engagement with the inner periphery thereof with itsends interposed between adjacent whirls of the sprm said cross-barhaving Wings cleft t ere om and bearing against the inner side ofv thehelix.

. 5. Aspring-helix terminating at one end in an attaching-loo disposeddiametrically across the helix and entering the open end thereof, and across-bar passing through the loop in engagement with the innerperiphery thereof with its ends connected to the helix.

6. A spring-helix terminatin at one end in an attaching-loop disposediametrically across the hellx, and a cross-bar passing through the loopin engagement with the inner periphery thereof with its ends connectedto the helix. 1

7. A spring-helix terminating. at one end in an attaching-loopdisposeddiametrically across the helix and entering the open endthereof, and across-bar passing through the loop in engagement with theinner periphery thereof and interposed between the two outermost whirlsof the helix.

8. A spring-helix terminating at each end in an attaching-loop disposeddiametrically ,7 across the whirls, and cross-bars passing throughthe'respective loops in engagement with the inner peri heries thereofwith their ends connected to t e helix.

9. A spring-helix having a cross-bar inserted between adjacent whirls,and an attaching-loop embracing the cross-bar.

10. A spring-helix havin one end formed into an attaching-loo an meansto brace the adjacent termina whirl of the helix to prevent straighteninout of the whirl under the influence of strains upon the attachingloo 1h testimony that I claim the foregoing as my own I have hereto afiixedmy signature in the presence of two witnesses.

WILLIAM H. CHELLIS.

Witnesses:

W. O. THOMAS, E. A. STINGL.

